Effects of a Single Blade Incidence Angle Offset on Adjacent Blades in a Linear Cascade

Processes

Josef Musil¹  Jiří Fürst¹  Petr Šidlof²  Martin Lasota²  Jan Pech³  David Šimurda³  Jan Lepicovsky³ 

[1] Faculty of Mechanical Engineering, Czech Technical University in Prague, Karlovo Nám. 13, 121 35 Prague 2, Czech Republic;Faculty of Mechatronics, Technical University of Liberec, Studentská 2, 461 17 Liberec 1, Czech Republic;Institute of Thermomechanics, Czech Academy of Sciences, Dolejškova 1402/5, 182 00 Prague 8, Czech Republic;

关键词: compressor cascade;    flutter;    CFD;    finite volumes;    experimental validation;   

DOI  :  10.3390/pr9111974

来源: DOAJ

【 摘 要 】

The paper presents a numerical and experimental investigation of the effect of incindence angle offset in a two-dimensional section of a flat blade cascade in a high-speed wind tunnel. The aim of the current work is tp determine the aerodynamic excitation forces and approximation of the unsteady blade-loading function using a quasi-stationary approach. The numerical simulations were performed with an in-house finite-volume code built on the top of the OpenFOAM framework. The experimental data were acquired for regimes corresponding to the numerical setup. The comparison of the computational and experimental results is shown for the static pressure distributions on three blades and upstream and downstream of the cascade. The plot of the aerodynamic moments acting on all five blades shows that the adjacent blades are significantly influenced by the angular offset of the middle blade.

【 授权许可】

Unknown